1425607655242 has 4 divisors (see below), whose sum is σ = 2138411482866. Its totient is φ = 712803827620.

The previous prime is 1425607655233. The next prime is 1425607655279. The reversal of 1425607655242 is 2425567065241.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 1111145783881 + 314461871361 = 1054109^2 + 560769^2 .

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 356401913809 + ... + 356401913812.

Almost surely, 2^{1425607655242} is an apocalyptic number.

1425607655242 is a deficient number, since it is larger than the sum of its proper divisors (712803827624).

1425607655242 is an equidigital number, since it uses as much as digits as its factorization.

1425607655242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 712803827623.

The product of its (nonzero) digits is 4032000, while the sum is 49.

The spelling of 1425607655242 in words is "one trillion, four hundred twenty-five billion, six hundred seven million, six hundred fifty-five thousand, two hundred forty-two".